A1SJ71QC24

P&S Pass & Seymour Legrand Plug L1420PCCV3 L14-20P 20 Amp 125/250 VAC

P&S Pass & Seymour Legrand Plug L1520P 20 A Amp 250 V VAC 3 Phase

P&S Pass & Seymour Legrand Plug L1630P 30 A Amp 480 V VAC 3 Phase

P&S Pass & Seymour Legrand Receptacle L1420CCCV3 L14-20R 20 Amp 125/250 VAC

P&S Pass & Seymour Legrand Receptacle L1620C 20 A Amp 480 V VAC 3 Phase

P&S Pass & Seymour Legrand Receptacle L1620C 20 A Amp 480 V VAC 3 Phase (TB)

Pacific Scientific E33NRFS-LNN-NS-02 Sigma Sigmax Stepping Motor E33NRFSLNNNS02

Pacific Scientific EP3640-1436-7-56BC-CU EP36401436756BCCU EP 3640-1436-7-56BC

Pacific Scientific K31HCHJ-LNK-NS-01 Powerpac 1.8 Degree Stepping Motor K31HCHJ

Pacific Scientific SC754A001-01 SC750 Servo Drive 230 VAC 18 FLA SC754A00101

Pacific Scientific SRF3643-4593-7-5-56C 90 VDC 1 HP 1750 RPM SRF364345937556C

Packers Kromer 7228-01 Zero Gravity Tool Balancer .8-2.6 lbs 722801

Pall Aeropower 18350-30896FA20C17M Inline Filter 1835030896FA20C17M  (TB)

Panasonic JU-257A216P Floppy Disk Drive JU257A216P

Panasonic MX8G30B M81X25GKU Single Phase Induction Motor 25 W 110/115 V (TSC)

Parker 01.50 C2HCT14A 1.000 3000 PSI Series 2H Pneumatic Cyl 01.50C2HCT14A1.000

Parker 02.00 BC2MAU14AC 1.000 Pneumatic Cylinder 2MA 02.00BC2MAU14AC1.000 (TB)

Parker 02.00 BC4MAU14AC 1.000 Pneumatic Cylinder 4MA 02.00BC4MAU14AC1.000 (TB)

Parker 02.00 CJ2MAUS14A 1.000 Pneumatic Cylinder 2MA 02.00CJ2MAUS14A1.000 (TB)

Parker 03.25 C2HDTS39A 4.000 Pneumatic Cylinder 03.25C2HDTS39A4.000

Parker 035807011B Fill Plug Kit Sohrader Bellows

Parker 05R113AC Pneumatic Regulator 150 PSI 05R113

Parker 06F32AC Pneumatic Filter 150 PSI

Parker 06L11BC Pneumatic Lubricator  (TB)

Parker 06R213AC 3/8" Regulator Schrader Bellows  (TB)

Parker 07E31A13AC Pneumatic Filter Regulator Assembly

Parker 07E3C00022 Pneumatic Filter Regulator Assembly Piggy Back

Parker 0856640100 Pivot Pin Assembly  (TB)

Parker 08F20C2128AAF4C05 Shutoff Valve 110 / 120 VAC 50 / 60 Hz. Water or Air

Parker 1.06DSRSY06.0 Pneumatic Cylinder ED202967 106DSRSY060

Parker 15L12NA Pneumatic Lubricator 150 PSI 15L12

Parker 15R213EB Pneumatic Regulator 250 PSI 15R213

Parker 2 POS S LOK LT COND 120/60 L7752410153 Valve Schrader Bellows  (TB)

Parker 3251-0375 3/8" Flow Control Valve 32510375 Schrader Bellows (TSC)

Parker 404211000 Pneumatic Roller Limit Switch 150 PSI  (TB)

Parker 692915 A Solenoid Connector  (TB)

Parker 6M-V6LR-SS Needle Valve 6MV6LRSS

Parker 71295SN1GNJ1N0L111C2 Skinner Valve 24 VDC 1/16" Orifice 325 PSI 10 Watt

Parker 801234-AAA-NR AAA-NC-20 2000-2550 PSI 20 GPM Servo BD15 BD15AAANC20 (TB)

Parker 801234-AAA-NR AAA-NE-2.5 1000-1350 PSI 2.5 GPM Servo BD15 BD15AAANE (TB)

Parker 8A02N-0BP-DX 150 PSI 1/4 Inch Pneumatic Filter 8A02N0BPDX

Parker 924735 20C FV Filter Element Assy. 1.5 CF / RF

Parker B622ADH53A 150 PSI Pneumatic Valve P02824H53 120 VAC 67 VDC

Parker Balston 9955-12 Grade DX Filter Element 995512

Parker BE342KJ-NMSN Compumotor Motor 340 V BE342KJNMSN

Parker CB802A0001 8" Bunan Cylinder Body Kit  (TB)

Parker CK1860295-10-24-6 24 VDC 10 Watt CK186029510246  (TB)

Parker Compumotor PCA 71-011474-02 Rev 03 PCA7101147402

Parker CP*OEM650X-10092 Compumotor OEM Series CPOEM650X10092 CP*OEM650X

Parker F400B Hydraulic Flow Control Valve 2000 PSI 5 GPM 138 Bar Max

Parker F52VXBG019A 145 PSI 24 VDC Valve (TB)

Parker GEM-VM50 Breakout Module GEMVM50

Parker GV Gemini Servo GV-U12E-NK 120/240 V 50/60 Hz 3.6 kW Drive GVU12ENK

Parker HBT20-02CTGV-B Pneumatic Cylinder 2.02MA02.0-CV 2MA (TSC)

Parker Kuroda PCS2413-NB-100MP 100 / 115 VAC .2 - .8 MPa PCS2413NB100MP PCS2413

Parker L0287513 Pneumatic Flow Control Regulator PS2930166P

Parker LO7486000C Reed Switch 3 Pole Male

Parker Midwest Fluid Power 2-016 N0552-90 O-Ring 2016N055290 Bag of 6  (TB)

Parker Midwest Fluid Power 2-121 N552-90 O-Ring 2121N55290 Bag of 8  (TB)

Parker N620S Flow Control Valve 2000  (TB)

Parker P1D5S100MCE0200NNNNN Pneumatic Cylinder 200 mm Stroke P1D

Parker PK152HLL05 1 1/2" Viton Piston Seal Kit  (TB)

Parker Porter Mass Flow 251-DKHSVWAA LB-521 Controller LB521 251DKHSVWAA

Parker PS5394 Valve Seal Repair Service Kit

Parker PS539700 Solenoid & Valve Seal Repair Kit

Parker PS701P Filter Element 40 Micron Plastic

Parker PS802P Filter Element Kit C Design  (TB)

Parker RG02MA0101 1.00 2MA Gland Cart Kit  (TB)

Parker RK02MA0061 .625 2MA Rod Seal Kit  (TB)

Parker RS33B-DNNPS Compumotor 1.8 Degree Step Motor 170 VDC 1500 RPM RS33BDNNPS

Parker RS33B-SNNPS Compumotor 1.8 Degree Step Motor 170 VDC 1500 RPM RS33BSNNPS

Parker Schrader Bellows 4806-1000 Silencer 48061000

Parker Schrader Bellows B281-005 Pulsa-Pak 10/12 V B281005

Parker Schrader Bellows B732706 1 3/8" Rod Gland Cart Kit  (TB)

Parker Schrader Bellows CS1HM13NBG5300A 150 PSI Pneumatic Valve 110/120 VAC

Parker Schrader Bellows PKP-10 Pulsa-Pak 10/12 V PKP10 Valvair

Parker Shut off Valve 3FTC80 24 VDC 11.5 Watts

Parker SSD 690PB/0040/400/3/0/0021/US/0/0/0/0/0 Drives 690+0005/460/1BN 460 V

Parker Telepneumatic PS1-E23 115/120 VAC Pneumatic Valve Solenoid PS1E23

Parker ZETA4 Drive 87-014030-02A Compumotor Servo Drive 120 V ZETA 8701403002A

Patlite LHE-A 24 V AC/DC Stack Light Red Orange Green LHEA

Patlite LME-TFBW 24 V AC/DC Stack Light Red Blue Green LMETFBW

Payne Engineering 11BE-4-30AP2 17804 480 VAC 30 Amp 120 VAC Ext Cont 11BE430AP2

Payne Engineering 11DZ-2-30 1Ph 35761 240 VAC 30 Amp w/ 120 VAC CTL 11DZ230

Payne Engineering 11DZ-2-30N 1Ph 33550 240 VAC 30 Amp w/ 120 VAC CTL 11DZ230N

Payne Engineering 11DZ-4-30N 480 VAC 30 Amp w/ 120 VAC CTL Solid Relay 11DZ430N

PCS 06MH120 12" Length 5/8" O.D. 11/32" I.D. 2.7 LBS. Die Spring 06MH 06MH-120

PCS NP9-10 NP9 1/8" Pin Dia. 10" Long 1/4" Head Dia. Die Ejector Pin

A1SJ71QC24

A1SJ71QC24

A1SJ71QC24

一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。

它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。在工业生产的各个领域，机械加工企业为了提高生产效率，采用机械化流水作业的方式，对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代，生产线承担的加工对象也随之改变，这就需要改变控制程序，使生产线的机械设备按新的工艺过程运行，而继电接触器控制器系统是采用固定接线，很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多，随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。

　　发展趋势：1.向高速度、大容量方向发展

　　为了提高PLC的处理能力，要求PLC具有的响应速度和更大的存储容量。目前，有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。

　　在存储容量方面，有的PLC可达几十兆字节。为了扩大存储容量，有的公司已使用了磁泡存储器或硬盘。

　　2.向超大型、超小型两个方向发展

　　当前中小型PLC比较多，为了适应市场的多种需要，今后PLC要向多品种方向发展，特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC，其使用32位微处理器，多CPU并行工作和大容量存储器，功能强。